> Model_DD_1 <- glmer(cat_SNB_new ~ Condition_SNB * Gender_SNB + (1 | subject_SNB) + (1 | Gender_SNB:Condition_SNB), + data = s_complete, + family = binomial) boundary (singular) fit: see help('isSingular') please help about the Singular issue
Model_DD_1 <- glmer(cat_SNB_new ~ Condition_SNB * Gender_SNB + (1 | subject_SNB) + (1 | Gender_SNB:Condition_SNB), data = s_complete, family = binomial)